From d2f01c12572d9afce8170ff75852337d668387e7 Mon Sep 17 00:00:00 2001
From: Zhang Dian <54255897+zdpcdt@users.noreply.github.com>
Date: Mon, 22 Jan 2024 15:15:51 +0800
Subject: [PATCH] feat: :pressed, comparison.

---
 src/Ursa.Themes.Semi/Controls/RangeSlider.axaml | 2 ++
 src/Ursa/Controls/RangeSlider/RangeSlider.cs    | 7 +++++--
 src/Ursa/Controls/RangeSlider/RangeTrack.cs     | 6 ++++--
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/Ursa.Themes.Semi/Controls/RangeSlider.axaml b/src/Ursa.Themes.Semi/Controls/RangeSlider.axaml
index 1ab4c95..7d66251 100644
--- a/src/Ursa.Themes.Semi/Controls/RangeSlider.axaml
+++ b/src/Ursa.Themes.Semi/Controls/RangeSlider.axaml
@@ -52,6 +52,7 @@
                             <u:RangeTrack
                                 Name="{x:Static u:RangeSlider.PART_Track}"
                                 Grid.Row="1"
+                                Cursor="Hand"
                                 HorizontalAlignment="Stretch"
                                 VerticalAlignment="Stretch"
                                 Orientation="{Binding Orientation, RelativeSource={RelativeSource TemplatedParent}, Mode=OneWay}"
@@ -142,6 +143,7 @@
                                 Ticks="{TemplateBinding Ticks}" />
                             <u:RangeTrack
                                 Name="{x:Static u:RangeSlider.PART_Track}"
+                                Cursor="Hand"
                                 Grid.Column="1"
                                 HorizontalAlignment="Stretch"
                                 VerticalAlignment="Stretch"
diff --git a/src/Ursa/Controls/RangeSlider/RangeSlider.cs b/src/Ursa/Controls/RangeSlider/RangeSlider.cs
index 2bade27..92f8298 100644
--- a/src/Ursa/Controls/RangeSlider/RangeSlider.cs
+++ b/src/Ursa/Controls/RangeSlider/RangeSlider.cs
@@ -13,12 +13,13 @@ using Avalonia.Utilities;
 namespace Ursa.Controls;
 
 [TemplatePart(PART_Track, typeof(RangeTrack))]
-[PseudoClasses(PC_Horizontal, PC_Vertical)]
+[PseudoClasses(PC_Horizontal, PC_Vertical, PC_Pressed)]
 public class RangeSlider: TemplatedControl
 {
     public const string PART_Track = "PART_Track";
     private const string PC_Horizontal= ":horizontal";
     private const string PC_Vertical = ":vertical";
+    private const string PC_Pressed = ":pressed";
 
     private RangeTrack? _track;
     private bool _isDragging;
@@ -26,6 +27,8 @@ public class RangeSlider: TemplatedControl
     private IDisposable? _pointerMoveDisposable;
     private IDisposable? _pointerReleasedDisposable;
 
+    private const double Tolerance = 0.0001;
+
     public static readonly StyledProperty<double> MinimumProperty = RangeTrack.MinimumProperty.AddOwner<RangeSlider>();
     public double Minimum
     {
@@ -144,7 +147,7 @@ public class RangeSlider: TemplatedControl
     {
         var oldValue = args.OldValue.Value;
         var newValue = args.NewValue.Value;
-        if (oldValue != newValue)
+        if (Math.Abs(oldValue - newValue) > Tolerance)
         {
             RaiseEvent(new RangeValueChangedEventArgs(ValueChangedEvent, this, oldValue, newValue, isLower));
         }
diff --git a/src/Ursa/Controls/RangeSlider/RangeTrack.cs b/src/Ursa/Controls/RangeSlider/RangeTrack.cs
index 7d2a48b..a5e282d 100644
--- a/src/Ursa/Controls/RangeSlider/RangeTrack.cs
+++ b/src/Ursa/Controls/RangeSlider/RangeTrack.cs
@@ -22,7 +22,9 @@ public class RangeTrack: Control
     public const string PC_Vertical = ":vertical";
     private double _density;
     private Vector _lastDrag;
-    
+
+    private const double Tolerance = 0.0001;
+
     public static readonly StyledProperty<double> MinimumProperty = AvaloniaProperty.Register<RangeTrack, double>(
         nameof(Minimum), coerce: CoerceMinimum, defaultBindingMode:BindingMode.TwoWay);
 
@@ -165,7 +167,7 @@ public class RangeTrack: Control
     {
         var oldValue = args.OldValue.Value;
         var newValue = args.NewValue.Value;
-        if (oldValue != newValue)
+        if (Math.Abs(oldValue - newValue) > Tolerance)
         {
             RaiseEvent(new RangeValueChangedEventArgs(ValueChangedEvent, this, oldValue, newValue, isLower));
         }